Pump



.Sept.- 21 1926. v 1,600,945

W. 5. JENNINGS PUMP Fil ed Feb. 5.- 1,921

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Application filed February 5, 1921. Serial No. 442,219.

This invention relatesto pumps, and comprehends a construction designed for use in several ca aacities, as for instance, adevice for pumping heavy wood pulp, an irrigating pump, or it may be used as a rotary water or steam engine.

The invention embodies amongst other features filtering chamber of novel construction which communicates with the inlet of tie pump, and the novel and er'licient means for lubricating the sliding piston of the rotor, the invention resides in the construction and combination, and arrangement of parts as claimed.

Inthe drawings forming part of this application like numerals of reference indicate the similar parts in the several Views and whereint- Figure 1 is a front elevation of my improved pump;

Figure 2 is a side elevation;

Figure 3 is a transverse sectional View and Figure t is a detail longitudinal sectional view.

Referring to the drawings in detail 10 in. dicates the bed or supporting structure for the cylinder 11 which is bolted or otherwise suitably secured to the bed as shown. Arranged eccentrically within the cylinder 11 is the rotor 12 carried by the shaft 13 which passes longitudinally through the cylinder and equipped with suitable stutfing boxes 14. The. cylinder is provided with inlet openings 15 and an outlet opening 16. Arranged between these openings and extend ing longitudinal of the cylinder is a packing 17 which is yieldably held in contact with the periphery of the rotor to provide a tight connection between the rotor and cylinder-atthis point.

Arranged above the packing 17 and secured to the cylinder in any suitable manner is a plate 18 which supports a plurality of screws or other suitable adjusting elements 19 by the instrumentality of which the tension of the springs 20 may be varied, these springs being interposed between the packing 17 against which they bear and the plate 18. Manifestly, the springs 20 swing to maintain the packing in effective contact with the rotor. The shaft 13 is provided with a longitudinal slot 22 through which the sliding piston 23 operates, the rotor being provided with slots 24 through which the piston 23 slides. The piston is made up of two sections vwhich are connected by a spring 22 interposed between the sectionsand operable to hold the piston SQCIoiOEl against the wall of the cylinder.

Arranged at eachside of the piston 23 are guide rollers 25 the latter being arranged in pairs on the rotor at diametrically opposite points. The piston-23 is provided with a roller 26 which has each end contacting with the inner (periphery of the cylinder, while each end of the piston is also equipped with a spring pressed packing 27 which projects from the end of the piston to bear against the wall of the cylinder. The shaft 12 is provided on each side with a lubricant chamber 28, these chambers surrounding the slot in said shaft and being supplied with lubricant from a plurality of lubricantcontaining cups 30, the latter communicating with the opposite ends of-the chamber 28 by means of passages .31 leading from the cups 30. The piston 23 is provided with a plurality of oil slots 32 and 33 respectively, these slots leading from the ends ofthe piston to a point in close proximity to the transverse center of the piston, the corresponding ends of the slots opening at the opposed sides of the piston as shown. In other words, the slot 32 is sup lied with oil from one of the chambers 28 o the shaft 13,

while the slot 33 is supplied with oil from ment of the piston, and also to lubricate the 1 rollers 25 and 26. The shaft 13 projects beyond one end of the cylinder and has associated therewith a belt pulley 35. A supply pipe for the pump is provided as shown at 36, which has suitable communication with the inlet opening 15.

Leading from the outlet opening 16 of the cylinder is an outlet pipe 53, while projecting from the pipe is an elongated casing 54 in which is arranged a'valve 55 including a thread stem 56, the valve 55 controlling communication between the cylinder and the outlet pipe 53. l/Vhile the invention is primarily intended for pumping heavywith the valve 55 the construction can be used as a rotary engine. 7

lVhile it is believed that from the foregoing description the nature and advantages of the invention will be readily appar ent, I desire to have it understood that I do not limit myself to what is herein shown and described and'that such changes may be resorted to when desired, as'ftall within the scope of what is claimed.

What I claim is Avpump of the character described comprising a cylinder having an outlet and inlet opening, a rotor mount-ed eccentrically within the cylinder, a packing disposed between the inlet and outlet openings, a. plate over the packing and secured to. the cylinder springs between the plate and pack ng,

adjustable elements carried by the plate and engaging the springs for yieldably holding the packing in engagement with the periphery of the rotor, a shaft supporting the rotor and being provided with a longitudinal slot aligned with like slots formed in therotor, atwo part spring connected and pressed piston mounted for slidable movement in the aligned slots, each part being provided with a longitudinally arranged oil slot leading from an oil chamber in the shaft to the outer ends of said parts, guide rollers for the piston and being disposed in pairs in the slots of the rotor at diametrically-opposite sides thereoia roller at each WILLIAM s. JENNINGS; 

